Burke: Cardamine flexuosa vs. Cardamine breweri

	Cardamine flexuosa	Cardamine breweri
	wavy bittercress	Brewer's bittercress, round bittercress
Habit		Erect to spreading perennial, with slender rhizomes 2 mm. thick, but 4 mm. thick at the base of the stems; flowering stems simple to branched, 2-6 dm. tall, mostly glabrous.
Leaves		: Leaves glabrous, the few basal ones usually simple, the blade 1-3 cm. long, cordate or ovate; cauline leaves compound with 2-4 lanceolate to ovate lobes, the terminal one dentate-lobed.
Flowers		Flowers in racemes, the pedicles ascending, 5-20 mm. long; sepals 4, 1.5-2.5 mm. long; petals 4, white, obovate, 3-7 mm. long; style 0.5-2 mm. long.
Fruits		Siliques erect, 2-3 cm. long, 1-1.5 mm. broad.

	Cardamine flexuosa	Cardamine breweri
Flowering time	April-September	April-August
Habitat	Disturbed ground, often where moist or shaded.	Stream margins, wet meadows, pond shores, and other riparian areas.
Distribution	Occurring west of the Cascades crest in Washington; British Columbia to California, also in central and eastern North America. [WildflowerSearch map] [BONAP county map]	Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana, Wyoming, and Colorado [WildflowerSearch map] [BONAP county map]
Origin	Introduced from Eurasia	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	C. angulata, C. bellidifolia, C. breweri, C. cordifolia, C. corymbosa, C. hirsuta, C. nuttallii, C. occidentalis, C. occulta, C. oligosperma, C. pensylvanica, C. pratensis, C. umbellata	C. angulata, C. bellidifolia, C. cordifolia, C. corymbosa, C. flexuosa, C. hirsuta, C. nuttallii, C. occidentalis, C. occulta, C. oligosperma, C. pensylvanica, C. pratensis, C. umbellata
Web links	Local floras: BC, OR, WA Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Cardamine flexuosa

Cardamine breweri

wavy bittercress

Brewer's bittercress, round bittercress

Habit

Erect to spreading perennial, with slender rhizomes 2 mm. thick, but 4 mm. thick at the base of the stems; flowering stems simple to branched, 2-6 dm. tall, mostly glabrous.

Leaves

: Leaves glabrous, the few basal ones usually simple, the blade 1-3 cm. long, cordate or ovate;

cauline leaves compound with 2-4 lanceolate to ovate lobes, the terminal one dentate-lobed.

Flowers

Flowers in racemes, the pedicles ascending, 5-20 mm. long;

sepals 4, 1.5-2.5 mm. long;

petals 4, white, obovate, 3-7 mm. long;

style 0.5-2 mm. long.

Fruits

Siliques erect, 2-3 cm. long, 1-1.5 mm. broad.